文章摘要
水性涂料用苯丙树脂的制备及胶膜性能
Preparation of Styrene-acrylic Resin and Film Properties for Waterborne Coatings
投稿时间:2019-03-18  修订日期:2019-05-08
DOI:
中文关键词: 苯丙乳液  水性涂料  胶膜性能  核壳结构
英文关键词: styrene-acrylic emulsion  functional coating  film properties  core-shell structure
基金项目:陕西省教育厅重点实验室科研计划项目(2010JS058)
作者单位E-mail
成航航 陕西科技大学 857207167@qq.com 
沈一丁 陕西科技大学 ydshen@sust.edu.cn 
马国艳 陕西科技大学  
杨凯 陕西科技大学  
侯旭明 陕西科技大学  
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中文摘要:
      以苯乙烯(St)、甲基丙烯酸甲酯(MMA)、丙烯酸丁酯(BA)为主要单体,甲基丙烯酸(MAA)、甲基丙烯酸羟丙酯(HPMA)为功能单体,通过半连续及转相乳液聚合法,制备了具有核壳结构的水性苯丙水分散体。探讨了MAA加料方式,MAA、St、HPMA等单体用量对水性苯丙树脂水分散体乳液性能及胶膜性能的影响,并利用傅里叶红外光谱(FT-IR)、热失重分析仪(TGA)、激光粒径散射仪(DLS)及透射电镜(TEM)对苯丙树脂的结构、热稳定性、乳胶粒的大小及形貌进行表征。结果表明:当MAA在核壳中分配质量比为2:8、MAA的用量为7.5wt%、HPMA的用量为10wt%、St:MMA质量比为3:1时,得到共聚物乳液的粒径为259.65nm、粘度为381.5mPa?s,胶膜耐水时间为90h、硬度为72.4?、拉伸强度为1.422MPa、断裂伸长率为59.355%,附着力1级的水性苯丙水分散体。
英文摘要:
      The aqueous styrene-acrylic water dispersion with a core-shell structure was obtained from ethenylbenzene (St), methyl methacrylate (MMA), butyl acrylate (BA), methacrylic acid (MAA) and 2-hydroxypropyl methacrylate (HPMA) by semi-continuous solution and phase inversion emulsion polymerization. The structure, thermal stability, colloidal structureof the acrylate copolymer was characterized by fourier transform infrared spectroscopy (FT-IR), thermal gravimetric analysis (TGA), transmission electron microscope (TEM), respectively. Moreover, the emulsifying performances and varnish film properties of aqueous styrene-acrylic water dispersion were discussed and the synthetic conditions were also optimized. The results showed that the aqueous styrene-acrylic water dispersion presents excellent stability and outstanding varnish film properties, the FT-IR and TGA of the polymer are consistent with the design structure,when mass ratio of methacrylic acid (MAA) in the core shell is 2:8, the mass fraction of MAA was7.5%, the mass fraction of 2-hydroxypropyl methacrylate (HPMA) was10.0%, St:MMA mass ratio is 3:1, The copolymer emulsion particle could reach 259.65nm, viscosity 381.5mPa?s, the filming hardness was 72.4?, tensile Strength 1.422MPa, elongation at break 59.355%, the filming water resistance time could approach 90h, and the adhesion level was 1.
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